The intake and feeding value for young beef cattle of two cultivars of tetraploid Italian ryegrass when grazed or conserved by artificial dehydration or ensilage - WILKINSON, J. M.; LE DU, Y. L. P.; COOK, J. E.; BAKER, R. D. (Blackwell Publishing Ltd, 1982)
http://dx.doi.org/10.1111/j.1365-2494.1982.tb01573.x
Keywords: ZA-ZE